Molecular analysis suggests that the rapid diversification during the Cambrian explosion may have been due to evolution of the Hox genes.
A)definite shape and symmetry.
B)tissues organized into organs and organ systems.
C)distinct embryonic layers which differentiate into adult tissues.
D)the Hox genes.
E)having cells organized into tissue layers.

Question

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Molecular analysis suggests that the evolution of Hox genes may have been responsible for the rapid diversification during the Cambrian explosion.

Molecular Analysis Suggests That the Rapid Diversification During the Cambrian